EN
ar
bg
hr
cs
da
nl
fi
fr
de
el
hi
it
ko
no
pl
pt
ro
ru
es
sv
tl
iw
id
lv
lt
sr
sk
sl
uk
vi
et
hu
th
tr
fa
ms
hy
ka
ur
bn
mn
ta
kk
uz
ku
Vibrating Wire Strain Gauges for Bridge, Tunnel & Dam Monitoring: Complete Selection Guide
The global construction industry is experiencing a massive surge in large-scale infrastr...
Kingmach Extensometers: Accurate Deformation Monitoring
extensometers
Finding an extensometer that holds up in tough field conditions can be a headache. At Kingmach, we've spent years refining our measurement instruments to match real-world demands. Our extensometers cover a wide range—from borehole types for subsurface monitoring to surface-mounted models for structures. We work with engineers who need repeatable data without constant recalibration. Rather than offering a one-size-fits-all box, we adapt the gauge length, range, and output signal to your project. That means if you're monitoring a dam, tunnel, or deep excavation, the extensometer reads what matters, in the units you prefer. And because we handle production in-house, we can ship with the documentation and support your field crews actually need.
Technical Detail
Configured around process stability, mold life, and long-term uptime.
At Kingmach Measurement & Monitoring Technology, extensometers are built with field reliability in mind. We manufacture a broad range—borehole extensometers for rock mass displacement, surface extensometers for crack monitoring, and tape extensometers for convergence measurements. The sensors typically use vibrating wire or potentiometric transducers, so you can choose what fits your data logger. Available measurement spans start at just a few millimeters and can extend beyond a meter, with a common accuracy of ±0.1% FS. Our engineering team can adjust parameters like gauge length, cable length, and output signal (4-20 mA, RS485, etc.) to match your existing setup. Since we keep a modular inventory, lead times are reasonable, and we provide calibration certificates and installation guidance with every shipment. We also support custom anchoring systems when rock conditions are tricky. Globally, our distributors help bridge language and time-zone gaps, so technical support doesn't disappear after delivery. Whether you're instrumenting a mine roof, a bridge abutment, or a concrete dam, we can put together an extensometer package that doesn't force you to rework your monitoring strategy.
News
Industry updates
Hollow Load Cells for Bridge Cable & Anchor Monitoring: Selection Guide & Specifications
Cable-stayed bridges, pre-stressed concrete decks, and dam anchors rely on precisely cal...
Understanding the 9 Types of Load Cells: An Engineering Selection Guide
The Type of Load Cell Is Not a Product Choice—It Is an Engineering Decision In ...
Products
Production modules
Smart Flexible Displacement Meter JMDL-24XXAT
Smart Flexible Displacement Meter JMDL-24XXAT
View Details
Smart Multipoint Displacement Meter JMDL-31XXAT
Smart Multipoint Displacement Meter JMDL-31XXAT
View Details
Smart Single-Point Bedrock Displacement Meter JMDL-32XXAT
Smart Single-Point Bedrock Displacement Meter JMDL-32XXAT
View DetailsFAQ
Common technical questions
What’s the difference between your borehole and surface extensometers?
Borehole extensometers are installed in drilled holes to measure subsurface displacement, often in rock or soil. Surface models mount externally on structures to track crack opening or joint movement. The choice comes down to where you need the data.
Can I connect your extensometers to a data logger from another brand?
In most cases, yes. Our standard outputs include 4-20 mA and RS485, which are widely compatible. Just check the input specifications of your logger, and we can configure the sensor accordingly.
How do you handle installation in weathered rock?
We offer several anchoring options, including grouted rebar anchors and expandable shell anchors, depending on the borehole condition. Our support team can review your ground report and suggest the best method.
Do you provide calibration certificates?
Every extensometer leaves our factory with a calibration certificate traceable to national standards. If you need additional verification, we can arrange that as well.
What’s the typical lead time for a custom extensometer?
It depends on the complexity, but our modular approach keeps most custom builds to a few weeks. We’ll give you a firm schedule once we review your requirements.
Need a solution for your project?
Share your product type, target capacity, and application requirements. Our team can review the details and recommend a practical next step.